diff --git a/src/main/java/com/bartlomiejpluta/demo/entity/Chest.java b/src/main/java/com/bartlomiejpluta/demo/entity/Chest.java
index 7090738..4da9c18 100644
--- a/src/main/java/com/bartlomiejpluta/demo/entity/Chest.java
+++ b/src/main/java/com/bartlomiejpluta/demo/entity/Chest.java
@@ -1,30 +1,25 @@
 package com.bartlomiejpluta.demo.entity;
 
-import com.bartlomiejpluta.base.api.context.ContextHolder;
-import com.bartlomiejpluta.demo.runner.DemoRunner;
 import com.bartlomiejpluta.demo.world.item.Item;
 import lombok.Getter;
 import lombok.NonNull;
 
 public class Chest extends MapObject {
-   private final DemoRunner runner;
-
    @Getter
    private final Item[] content = new Item[Enemy.MAX_LOOT];
 
    public Chest(@NonNull String id) {
       super(id);
-      runner = ((DemoRunner) ContextHolder.INSTANCE.getContext().getGameRunner());
    }
 
    @Override
    protected void interact() {
-      runner.openChestWindow(this);
+      guiManager.openChestWindow(this);
    }
 
    @Override
    protected boolean shouldGoFurther(MapObject object) {
-      return runner.openedWindows() == 0;
+      return guiManager.openedWindows() == 0;
    }
 
    public Chest addItem(Item item) {
diff --git a/src/main/java/com/bartlomiejpluta/demo/entity/NamedCharacter.java b/src/main/java/com/bartlomiejpluta/demo/entity/NamedCharacter.java
index ded136a..2731f40 100644
--- a/src/main/java/com/bartlomiejpluta/demo/entity/NamedCharacter.java
+++ b/src/main/java/com/bartlomiejpluta/demo/entity/NamedCharacter.java
@@ -4,16 +4,19 @@ import com.bartlomiejpluta.base.api.character.Character;
 import com.bartlomiejpluta.base.api.context.Context;
 import com.bartlomiejpluta.base.api.context.ContextHolder;
 import com.bartlomiejpluta.base.lib.character.CharacterDelegate;
+import com.bartlomiejpluta.demo.menu.GuiManager;
 import com.bartlomiejpluta.demo.runner.DemoRunner;
 
 public abstract class NamedCharacter extends CharacterDelegate {
    protected final Context context;
    protected final DemoRunner runner;
+   protected final GuiManager guiManager;
 
    public NamedCharacter(Character character) {
       super(character);
       this.context = ContextHolder.INSTANCE.getContext();
       this.runner = (DemoRunner) context.getGameRunner();
+      this.guiManager = context.getGlobal("gui", GuiManager.class);
    }
 
    public abstract String getName();
diff --git a/src/main/java/com/bartlomiejpluta/demo/entity/Player.java b/src/main/java/com/bartlomiejpluta/demo/entity/Player.java
index 2f0522b..2859c9b 100644
--- a/src/main/java/com/bartlomiejpluta/demo/entity/Player.java
+++ b/src/main/java/com/bartlomiejpluta/demo/entity/Player.java
@@ -2,6 +2,7 @@ package com.bartlomiejpluta.demo.entity;
 
 import com.bartlomiejpluta.base.api.character.Character;
 import com.bartlomiejpluta.demo.world.item.Item;
+import com.bartlomiejpluta.demo.world.item.ItemStack;
 import com.bartlomiejpluta.demo.world.weapon.Ammunition;
 import com.bartlomiejpluta.demo.world.weapon.Weapon;
 import lombok.NonNull;
@@ -46,7 +47,7 @@ public class Player extends Creature {
 
             // Search the enemy corpse
             if (entity instanceof Enemy enemy && !enemy.isAlive()) {
-               runner.openLootWindow(enemy);
+               guiManager.openLootWindow(enemy);
                interactionCooldown = INTERACTION_COOLDOWN;
                return;
             }
diff --git a/src/main/java/com/bartlomiejpluta/demo/map/BaseMapHandler.java b/src/main/java/com/bartlomiejpluta/demo/map/BaseMapHandler.java
index 9d158a5..be732d3 100644
--- a/src/main/java/com/bartlomiejpluta/demo/map/BaseMapHandler.java
+++ b/src/main/java/com/bartlomiejpluta/demo/map/BaseMapHandler.java
@@ -2,6 +2,8 @@ package com.bartlomiejpluta.demo.map;
 
 import com.bartlomiejpluta.base.api.camera.Camera;
 import com.bartlomiejpluta.base.api.context.Context;
+import com.bartlomiejpluta.base.api.gui.Window;
+import com.bartlomiejpluta.base.api.gui.WindowPosition;
 import com.bartlomiejpluta.base.api.icon.Icon;
 import com.bartlomiejpluta.base.api.input.Input;
 import com.bartlomiejpluta.base.api.input.Key;
@@ -19,14 +21,18 @@ import com.bartlomiejpluta.demo.entity.Door;
 import com.bartlomiejpluta.demo.entity.Enemy;
 import com.bartlomiejpluta.demo.entity.Player;
 import com.bartlomiejpluta.demo.event.EnemyDiedEvent;
+import com.bartlomiejpluta.demo.menu.GuiManager;
 import com.bartlomiejpluta.demo.runner.DemoRunner;
 import com.bartlomiejpluta.demo.world.potion.Medicament;
 import lombok.NonNull;
 
+import java.util.concurrent.CompletableFuture;
+
 public abstract class BaseMapHandler implements MapHandler {
    protected Screen screen;
    protected Context context;
    protected DemoRunner runner;
+   protected GuiManager guiManager;
    protected Camera camera;
    protected GameMap map;
    protected Player player;
@@ -37,6 +43,7 @@ public abstract class BaseMapHandler implements MapHandler {
       this.context = context;
       this.screen = context.getScreen();
       this.runner = (DemoRunner) context.getGameRunner();
+      this.guiManager = context.getGlobal("gui", GuiManager.class);
       this.camera = context.getCamera();
       this.map = map;
       this.player = context.getGlobal("player", Player.class);
@@ -51,7 +58,7 @@ public abstract class BaseMapHandler implements MapHandler {
          return;
       }
 
-      if (runner.openedWindows() > 0) {
+      if (guiManager.openedWindows() > 0) {
          return;
       }
 
diff --git a/src/main/java/com/bartlomiejpluta/demo/menu/MenuManager.java b/src/main/java/com/bartlomiejpluta/demo/menu/GuiManager.java
similarity index 86%
rename from src/main/java/com/bartlomiejpluta/demo/menu/MenuManager.java
rename to src/main/java/com/bartlomiejpluta/demo/menu/GuiManager.java
index b315937..abdb461 100644
--- a/src/main/java/com/bartlomiejpluta/demo/menu/MenuManager.java
+++ b/src/main/java/com/bartlomiejpluta/demo/menu/GuiManager.java
@@ -2,25 +2,20 @@ package com.bartlomiejpluta.demo.menu;
 
 import A.widgets;
 import com.bartlomiejpluta.base.api.context.Context;
-import com.bartlomiejpluta.base.api.gui.DisplayMode;
-import com.bartlomiejpluta.base.api.gui.GUI;
-import com.bartlomiejpluta.base.api.gui.UpdateMode;
-import com.bartlomiejpluta.base.api.gui.WindowManager;
+import com.bartlomiejpluta.base.api.gui.*;
 import com.bartlomiejpluta.base.api.input.Key;
 import com.bartlomiejpluta.base.api.input.KeyAction;
 import com.bartlomiejpluta.base.api.input.KeyEvent;
 import com.bartlomiejpluta.demo.entity.Chest;
 import com.bartlomiejpluta.demo.entity.Enemy;
-import com.bartlomiejpluta.demo.gui.EquipmentWindow;
-import com.bartlomiejpluta.demo.gui.GameMenuWindow;
-import com.bartlomiejpluta.demo.gui.LootWindow;
-import com.bartlomiejpluta.demo.gui.StartMenuWindow;
+import com.bartlomiejpluta.demo.gui.*;
 import com.bartlomiejpluta.demo.runner.DemoRunner;
 import lombok.NonNull;
 
+import java.util.concurrent.CompletableFuture;
 import java.util.function.Consumer;
 
-public class MenuManager {
+public class GuiManager {
    private final DemoRunner runner;
    private final Context context;
    private final GUI gui;
@@ -30,9 +25,10 @@ public class MenuManager {
    private final GameMenuWindow gameMenu;
    private final EquipmentWindow equipment;
    private final LootWindow loot;
+   private final DialogWindow dialog;
    private final Consumer<KeyEvent> gameMenuHandler = this::handleGameMenuKeyEvent;
 
-   public MenuManager(@NonNull DemoRunner runner, @NonNull Context context) {
+   public GuiManager(@NonNull DemoRunner runner, @NonNull Context context) {
       this.runner = runner;
       this.context = context;
       this.gui = context.newGUI();
@@ -49,6 +45,8 @@ public class MenuManager {
       this.gameMenu.getStartMenuBtn().setAction(runner::returnToStartMenu);
       this.gameMenu.getExitBtn().setAction(runner::exit);
 
+      this.dialog = gui.inflateWindow(A.widgets.dialog.uid, DialogWindow.class);
+
       this.equipment = gui.inflateWindow(A.widgets.equipment.uid, EquipmentWindow.class);
       this.loot = gui.inflateWindow(widgets.loot_menu.uid, LootWindow.class);
    }
@@ -102,6 +100,11 @@ public class MenuManager {
       manager.setDisplayMode(DisplayMode.DISPLAY_TOP);
    }
 
+   public CompletableFuture<Window> showDialog(@NonNull String message, @NonNull WindowPosition position) {
+      manager.closeAll();
+      return manager.open(dialog, message, position);
+   }
+
    public void openLootWindow(@NonNull Enemy enemy) {
       manager.closeAll();
 
diff --git a/src/main/java/com/bartlomiejpluta/demo/runner/DemoRunner.java b/src/main/java/com/bartlomiejpluta/demo/runner/DemoRunner.java
index 6e749c5..6d4457e 100644
--- a/src/main/java/com/bartlomiejpluta/demo/runner/DemoRunner.java
+++ b/src/main/java/com/bartlomiejpluta/demo/runner/DemoRunner.java
@@ -5,10 +5,8 @@ import com.bartlomiejpluta.base.api.gui.GUI;
 import com.bartlomiejpluta.base.api.runner.GameRunner;
 import com.bartlomiejpluta.base.api.screen.Screen;
 import com.bartlomiejpluta.base.util.profiler.FPSProfiler;
-import com.bartlomiejpluta.demo.entity.Chest;
-import com.bartlomiejpluta.demo.entity.Enemy;
 import com.bartlomiejpluta.demo.entity.Player;
-import com.bartlomiejpluta.demo.menu.MenuManager;
+import com.bartlomiejpluta.demo.menu.GuiManager;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -18,7 +16,7 @@ public class DemoRunner implements GameRunner {
    private final FPSProfiler fpsProfiler = FPSProfiler.create(20);
    private Screen screen;
    private Context context;
-   private MenuManager menu;
+   private GuiManager guiManager;
    private GUI hud;
    private Player player;
 
@@ -35,7 +33,7 @@ public class DemoRunner implements GameRunner {
       initHUD();
       initMenu();
 
-      menu.showStartMenu();
+      guiManager.showStartMenu();
 
       screen.show();
    }
@@ -51,11 +49,8 @@ public class DemoRunner implements GameRunner {
    }
 
    private void initMenu() {
-      this.menu = new MenuManager(this, context);
-   }
-
-   public int openedWindows() {
-      return this.menu.openedWindows();
+      this.guiManager = new GuiManager(this, context);
+      context.putGlobal("gui", guiManager);
    }
 
    private void initHUD() {
@@ -79,8 +74,8 @@ public class DemoRunner implements GameRunner {
    }
 
    public void newGame() {
-      menu.closeAll();
-      menu.enableGameMenu();
+      guiManager.closeAll();
+      guiManager.enableGameMenu();
       resetPlayer();
       context.openMap(A.maps.hero_home.uid);
       context.getMap().getObjectLayer(A.maps.hero_home.layers.main).addEntity(this.player);
@@ -90,20 +85,12 @@ public class DemoRunner implements GameRunner {
    }
 
    public void returnToStartMenu() {
-      menu.closeAll();
+      guiManager.closeAll();
       hud.hide();
       context.pause();
       context.closeMap();
-      menu.disableGameMenu();
-      menu.showStartMenu();
-   }
-
-   public void openLootWindow(Enemy enemy) {
-      menu.openLootWindow(enemy);
-   }
-
-   public void openChestWindow(Chest chest) {
-      menu.openChestWindow(chest);
+      guiManager.disableGameMenu();
+      guiManager.showStartMenu();
    }
 
    public void exit() {